The simplest way of getting the data from the Arduino is with the unit connected directly to a host computer Universal Serial Bus (USB) interface, reading the data as if it were a serial connection.
从 Arduino 获得数据最简单的方式是让此单元直接连接到主机计算机的 Universal Serial Bus (USB) 接口，像串行连接那样读取数据。
The host computer and the slave computers can communicate with each other either through the interface RS485 or the interface USB.
上位机与下位机之间既可通过RS485口通讯，也可以通过USB接口通讯。
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